Explanation:

Box 1: Zone-redundant storage (ZRS)
Zone-redundant storage (ZRS) replicates your data synchronously across three storage clusters in a single region.
LRS would not remain available if a data center in the region fails
GRS and RA GRS use asynchronous replication.
Box 2: StorageV2 (general purpose V2)
ZRS only support GPv2.
References:
https://docs.microsoft.com/en-us/azure/storage/common/storage-redundancy
https://docs.microsoft.com/en-us/azure/storage/common/storage-redundancy-zrs

Explanation:
Task 1: IP flow verify
The IP flow verify capability enables you to specify a source and destination IPv4 address, port, protocol (TCP or UDP), and traffic direction (inbound or outbound). IP flow verify then tests the communication and informs you if the connection succeeds or fails. If the connection fails, IP flow verify tells you which security rule allowed or denied the communication, so that you can resolve the problem.
Task 2: Connection troubleshoot
The connection troubleshoot capability enables you to test a connection between a VM and another VM, an FQDN, a URI, or an IPv4 address. The test returns similar information returned when using the connection monitor capability, but tests the connection at a point in time, rather than monitoring it over time.
Reference:
https://docs.microsoft.com/en-us/azure/network-watcher/network-watcher-monitoring-overview
https://docs.microsoft.com/en-us/azure/network-watcher/network-watcher-ip-flow-verify-overview
https://docs.microsoft.com/en-us/azure/network-watcher/network-watcher-connectivity-overview

Explanation:

On January 15, 2021, App1 will have only one backup in storage. Yes, this is correct. According to the table, App1 has a backup every 1 day, starting from January 6, 2021, with a retention of 0 days. This means that each backup will be deleted after 0 days, or as soon as the next backup is created. Therefore, on January 15,
2021, App1 will have only one backup in storage, which is the one created on that day1.
On February 6, 2021, you can access the backup of the App2 test slot from January 15, 2021. No, this is not correct. According to the table, App2 has a backup every 1 day, starting from January 6, 2021, with a retention of 30 days. This means that each backup will be deleted after 30 days, or when the storage limit is reached. However, the table also shows that App2 has a setting of "Keep at least one backup" set to Yes. This means that the oldest backup will be retained even if it exceeds the retention period or the storage limit2.
Therefore, on February 6, 2021, you can access the backup of the App2 test slot from January 6, 2021, but not from January 15, 2021.
On January 15, 2021, you can restore the App2 production slot backup from January 6 to the App2 test slot. Yes, this is correct. According to the web search results, you can restore a backup by overwriting an existing app or by restoring to a new app or slot3. You can also restore a backup from a different slot or app as long as they are in the same subscription and region4. Therefore, on January 15, 2021, you can restore the App2 production slot backup from January 6 to the App2 test slot.

In this scenario, the problem involves a Network Security Group (NSG) configuration that determines inbound traffic rules for a virtual machine. The NSG rules for VM2 are evaluated in order of priority, from the lowest number (highest priority) to the highest number (lowest priority).
According to the exhibit, the effective NSG inbound rules for VM2 are:
Priority
Name
Port
Protocol
Source
Destination
Action
100
Allow_131.107.100.50
443
TCP
131.107.100.50
VirtualNetwork
Allow
200
Block_All_Other_443
443
TCP
Any
Any
Deny
65000
AllowVNetInBound
Any
Any
VirtualNetwork
VirtualNetwork
Allow
65001
AllowAzureLoadBalancerInBound
Any
Any
AzureLoadBalancer
Any
Allow
65500
DenyAllInBound
Any
Any
Any
Any
Deny
Root Cause Analysis:
You discovered that connections to App1 from 131.107.100.50 over TCP port 443 fail, even though the Load Balancer and backend pool are configured correctly.
From the rules shown, rule 100 (Allow_131.107.100.50) should theoretically allow that specific IP to connect on port 443. However, note that the Destination for the rule is VirtualNetwork, meaning that the traffic from
131.107.100.50 must be within the same virtual network address space to be permitted.
Since 131.107.100.50 is a public IP address (external source) and not part of the Virtual Network (VNet) address space, the rule does not apply, and the connection fails.
Additionally, the next rule (200 - Block_All_Other_443) explicitly denies any other inbound traffic on TCP
443 from any source. Therefore, the inbound traffic from 131.107.100.50 is blocked.
Evaluation of the Proposed Solution:
The proposed solution suggests creating an inbound security rule:
"Allow any traffic from the AzureLoadBalancer source and set priority to 150." However, the existing NSG already includes a built-in rule (65001 - AllowAzureLoadBalancerInBound) that allows inbound traffic from the Azure Load Balancer. That means traffic originating from the Azure Load Balancer front-end is already allowed by default.
Since the failed connection is coming from an external client (131.107.100.50) - not from the Load Balancer source itself - adding another rule allowing AzureLoadBalancer traffic does not resolve the issue. The correct action would be to modify or create a new rule that:
Allows inbound traffic on port 443
From source 131.107.100.50
With destination = Any
Priority lower than 200 (i.e., higher precedence than the deny rule)
Verified Microsoft Azure Administrator Reference:
From Microsoft Docs - Network security group overview and priority order:
"Azure processes the security rules in priority order, starting from the lowest number. Once a rule matches the traffic, processing stops. Lower-numbered priority rules override higher-numbered ones."
"The built-in rule AllowAzureLoadBalancerInBound allows traffic from Azure Load Balancer but not from external public IPs directly accessing the virtual machine." Correct Resolution:
You need to create a new inbound rule allowing TCP 443 from 131.107.100.50 with Destination: Any, Priority: < 200, for example:
Priority: 150
Source: IP address (131.107.100.50)
Destination: Any
Protocol: TCP
Port: 443
Action: Allow
This will ensure the traffic is allowed before the deny rule at 200 takes effect.
# Final Verified Answer:
B). No
The proposed rule allowing traffic from AzureLoadBalancer does not help, because traffic from
131.107.100.50 originates externally, not from the Load Balancer. You must instead create a rule that explicitly allows that IP on port 443 with a higher priority than the existing deny rule.

Explanation:

In Azure App Service, a Web App must be hosted in an App Service Plan (ASP) that meets three key compatibility conditions:
The App Service Plan and the Web App must be in the same region.
The operating system (Windows or Linux) of the App Service Plan must match the Web App type.
The runtime stack of the Web App must be supported on the App Service Plan's OS.
Let's apply these rules to the scenario:
# App Service Plans:
Name
Operating System
Location
ASP1
Windows
West US
ASP2
Windows
Central US
ASP3
Linux
West US
# Web Apps:
Name
Runtime Stack
Location
WebApp1
NET Core 3.0
West US
WebApp2
ASP.NET 4.7
West US
1## WebApp1 (.NET Core 3.0, West US)
Region requirement: Must use an App Service Plan in West US # # ASP1 and ASP3 qualify.
Runtime requirement: .NET Core 3.0 supports both Windows and Linux App Service Plans.
(Microsoft Learn: ".NET Core apps can run on both Windows and Linux App Service plans.")
# Therefore, WebApp1 can use ASP1 (Windows, West US) or ASP3 (Linux, West US).
# Answer: ASP1 and ASP3 only
2## WebApp2 (ASP.NET 4.7, West US)
Region requirement: Must be in West US # # ASP1 and ASP3 qualify.
Runtime requirement: ASP.NET 4.7 is a Windows-only framework; it cannot run on Linux App Service Plans.
(Microsoft Learn: "ASP.NET (non-Core) apps require a Windows-based App Service Plan.")
# Therefore, only ASP1 (Windows, West US) is compatible.
# Answer: ASP1 only
# Final Verified Answers:
Web App
Compatible App Service Plans
WebApp1
ASP1 and ASP3 only
WebApp2
ASP1 only
Microsoft Documentation Extract (Azure App Service):
"App Service plans must be in the same region as the web app."
"Windows App Service plans host ASP.NET, .NET Core, and Node.js apps."
"Linux App Service plans host .NET Core, Node.js, Python, PHP, Java, and custom containers."
".NET Framework (ASP.NET 4.x) applications can only run on Windows-based App Service plans." Hence, the verified and Microsoft-official answer is:
# WebApp1 # ASP1 and ASP3 only
# WebApp2 # ASP1 only